Speaking at his pre-match press conference on Friday, the former Chelsea manager told the media that football governing bodies in "every" other country tried to help clubs in Europe in the way they scheduled domestic fixtures.

And Mourinho insisted United's situation was far tougher than any of their rivals near the top of the table with Arsenal, Tottenham and Manchester City now out of European football this season.

"We played 11 matches in the last six weeks and it's going to get worse. I don't understand how we don't have any help in relation to European football. I've said this for many years," Mourinho stated.

"I think they don't give an 'S' about the English teams in Europe. They simply don't care. Every (other) country, they try to help, to give support to the teams in European football."

Mourinho said of reign as Inter Milan coach: "It was decided that when the clubs go to the knockout stages of the Europa League and the Champions League, they play (league games) on the previous Friday."

Mourinho added: "Without them (the clubs in European competition) and their money, the Premier League wouldn't be the Premier League – the clubs would not be so rich."

"It's difficult to play Monday with 10 men, it's difficult to play now, it's difficult to play 12 o'clock on Sunday. A lot of people might say we should have scored more goals. But a lot of things are going against us. The boys are amazing boys.

"We will probably lose the game on Sunday (at Middlesbrough). Fatigue has a price," Mourinho stressed.

United’s progress to the Europa League quarter-finals where they will face Anderlecht was overshadowed by the world’s most expensive footballer Paul Pogba’s injury during their 1-0 win over Rostov .

The English Premier League side had no reason to feel happy about their success, as midfielder Pogba was replaced by Marouane Fellaini due to an apparent hamstring injury early in the second half.

The only goal came from Juan Mata, who benefited from Zlatan Ibrahimovic’s back-heel pass inside the box on 70 minutes.

Jose Mourinho expects Pogba to be sidelined for about three weeks, forcing him to withdraw from the clash with Middlesbrough in the EPL, in addition to his national duties with France.

“Yeah,” Mourinho replied when asked if Pogba would be out for around three weeks.

"I don't know how long (he will be out) for sure. But there will be no Middlesbrough and no national team."

Mourinho then insistes Marcos Rojo’s decision to eat a banana during Manchester United’s 1-0 win over Rostov in the Champions League on Thursday night was no laughing matter.

The Manchester United defender was pictured eating the fruit after requesting it from the bench midway through the game at Old Trafford.

The incident was inevitably picked up on social media as Rojo boosted his energy levels during the game.

But the Red Devils boss insisted that it was not something to be laughing about after the game.

“I don’t know if you were tired at any time in your life. I’ve been tired many times and I know when the body is in its limits and needing anything. The player asked for a banana and a banana it was. But it’s not to laugh (about) at all. It’s to respect that the players, in their limits, give absolutely everything.”

Juan Mata scored the only goal of the game in the second half at Old Trafford as the Red Devils secured their place in the quarter-finals of the Europa League.